Many security mechanisms for mobile communications have been introduced in the literature. Among these mechanisms, a simple authentication technique for use in the global mobility network (GLOMONET) is proposed. Specifically, the wireless medium introduces new opportunities for eavesdropping of wireless data communications. Anyone with the appropriate wireless receiver can eavesdrop and this ki...

In this paper, a framework of authentication and undeniable billing support for an agentbased roaming service in WLAN/cellular networks interworking networks is proposed. This framework circumvents the requirement of peer-to-peer roaming agreements to provide seamless roaming service between WLAN hotspots and cellular networks operated by independent wireless network service providers. Within t...

The scenario of present day of information security system includes confidentiality, authenticity, integrity, non-repudiation. This present paper focus is enlightening the technique to secure data or message with authenticity and integrity. The security of communication is a crucial issue on World Wide Web (internet) and within organizations. It is about confidentiality, integrity and authentic...

The wireless sensor networking standard DASH7 operates in low-power communication with a better transmission quality in active RFID networks. The DASH7 security standard supports public key cryptography. At present, the DASH7 standard uses the message authentication code in the network layer for authentication and integrity. However, its security standard is still in an incubation stage with re...

Network & internet security is the burning question of today's world and they are deeply related to each other for secure successful data transmission. Network security approach is totally based on the concept of network security services. In this paper, a new system of network security service is implemented which is more secure than conventional network security services. This technique ...

A protocol for NFC mobile authentication and transaction is recently proposed by W. Chen et al. This protocol is used for micropayments, where the Mobile Network Operator (MNO) pays for its customers. The main advantage of this protocol is its compatibility with the existing GSM network. This paper suggests some improvements in this protocol from security point of view. As this protocol is used...

With the phenomenal growth of the Internet and open networks in general, security services, such as non-repudiation, become crucial to many applications. Non-repudiation services must ensure that when Alice sends some information to Bob over a network, neither Alice nor Bob can deny having participated in a part or the whole of this communication. Therefore a non-repudiation protocol has to gen...

In this paper, a new approach to Spread Spectrum (SS) watermarking technique is introduced. This problem is particularly interesting in the field of modern multimedia applications like internet when copyright protection of digital image is required. The approach exploits two-predecessor single attractor (TPSA) cellular automata (CA) suitability to work as efficient authentication function in wa...